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Background notes on U S Geological SurveyBolivia cooperative activities by Thor
Geologic setting by Donald H Richter Steve Ludington and Eduardo
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Afif belt Alta stock altered area altered rocks Altiplano Altiplano and Cordillera analyses andesite argillized Ash-flow tuff azurite Ballivian and Risacher barite basalt basin biotite Bolivia Bolivian polymetallic vein breccia brine Carangas Cerro La Joya Chalcocite chalcopyrite conglomerate consists contain copper deposits Cordillera Occidental Corocoro dacite deposit types Eduardo Soria-Escalante fault fluid inclusions fractures G.J. Orris galena geochemical Geológico de Bolivia gold grade halite intrusive Jabal Joya district Kkota Kori Kollo lacustrine Laguna lake Lipez Llallagua located malachite mantos Map showing mines Miocene Murdama group native sulfur occurrence oxides phenocrysts polymetallic polymetallic vein deposits porphyry propylitic prospect pyrite quadrangle quartz Quehua Formation reported rhyolite Salar saline sample localities sandstone Santos sediment sediment-hosted sedimentary rocks sericite Servicio Geológico Sigrid Asher-Bolinder silicified sodium sphalerite stratovolcano sulfide Table Tertiary thick tuff U.S. Geological Survey ulexite Uyuni veinlets volcanic rocks zone